Underground conduit



J. vv.' oRRocK' UNDERGROUND CONDUIT Fi-led Jan. 19.

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Patente Unt., ld, i924..

JOHN w. cartoon, or Wasriuounr, arianne, CANADA.

UNDERGROUND CONDUII.

Application led January 19, 1921.

ed on the fifth day of October, 1915, to John Wilson Orrock and Henry H. Vaughan.

The invention has for its object to provide a design of conduit of this type in which the relatively weaktop of the draining member, the latter being termed an invert in the earlier patent, is relieved of the weight of the half-round pipe or arch member. A further object of the invention is to prevent seepage water which percolates to the top of the arch member from iinding its way along the same, the idea being to cause it to drain laterally. It may be explained that the underground conduit developed by me has for its underlying essential idea a drainage member or tile for supporting steam pipes or the like and coacting with the arch section in forming a housing for these steam pipes and the like. The edges of the arch section are arranged in such relation with the tile that any water appearing on or in the conduit will be drained away.` My present invention is a further development of this idea and its object generally speaking is, as with my former invention, to utilize wherever possible standard materials.

In order to relieve the drainage tile of the weight of the arch section while still maintaining the drainage and housing properties of the patented conduit, I form the arch section slightly wider than the drainage tile over which it arches and it is supported either upon the same floor as the tile or upon the edges of the latter which under such conditions are specially formed for the purpose as mentioned hereinafter.

This arch section consists of corrugated metal which has the dual'functionof supporting a load with relatively light material, and at the same time presenting lateral surface drains which break the flow of water along the top of the arch section and cause it to fall laterally. Another function of the corrugations is that they have effective bonding `properties in connection with the outer Serial No. 438,488.

coating of concrete when such is used, thereby particularly adapting this arch section for use as the arch member of an underground conduit for pipes in the transmission of steam for heating and powerpurposes.

In the laying of my improved underground conduit it is sometimes possible to eXcavate so as to present a floor sufficiently hard to permit the drainage tile to be seated thereon and the edges of the arch sections also to rest thereon, but when the nature of the floor is such that it will not support the edges of the arched section the latter may-be provided with means for supporting Kit on the side edges of the drainage tiles.

For small installation, where the pipes are not large, the drainage base and its cover may be both of tile and rest on a floor formed by the ground or on a concrete base as conditions may require; and if necessary. as a further protection the conduit thus formed may be covered with concrete. Itis also preferable in each case to have tbe drainage base the full width of the conduit and of sufficient strength to provide bearing for supporting itself and the comparatively heavy insulated conductors` such as steainpipes, electric cables. water pipes and other conductors.

My improved conduit is well adapted for any form of underground conductor requiring protection and it has the virtue of simplicity of construction, protection against wetness reaching the insulation or lagging of heat conductors, and, which is of considerable importance, the conductors within it are accessible for inspection, repairs' and renewal.

For full comprehension, however, of mv invention reference must be hac to the accompanying drawings in which similar reference characters indicate the same parts and wherein:

Figure 1 is a transverse sectional view of my improved conduit in its proper location beneath a road bed;

Figure 2 is a side elevation of my improved conduit partly in vertical sectional view, the section being taken on line 2-2 Fig. 1;

Figure 3 is a detail view of one ofthe arch sections removed;

y Figure 4 is a detail view of the drainage tile.

My underground conduit is designed particularly for conducting insulated steam pipes and the like, such as indicated at b and c. The drainage'member I recom-mend is a Hat sided and flat ended concrete member or tilel CZ having `longitudinal drainage passages Z1 as shown 1n Figures l, 2 and 4; and the arch section consists of iron transversely corrugated as indicated at e.

y .When a soft soil is encountered, a floor ot concrete or other relatively hard material 1s firstlaid, andy arch sections having sides ofsuiiicient length to extend as at 615 to rest drainage tile 'areprovided A conduit of thisy form is shown in Figures l and 2..

In* orderv to prevent lateral displacementthe `drainage tiles their bottoms are pro# :vided with grou-nd: In all cases vvhe're'aT concrete covering is used the points' of contact, m, with the bottom of the trench or a concrete iloor are provided 'with' tenons n supplemented With 'do/wels o v.l f y l A TheUro-ller' bearing indicated at. Z920 in Figures 11p-'and 2, upon which the conductor bis supported vto accommodate expansion andcontraction of the pipe, is andv may be of any usual and preferred construction.

What I claim is as follows:

1. Ajconduit for the purpose described, comprising'a drainage tile anda transf versely corrugated metal arch section arched over the drain'agetila the said tile being throughout its length of less Width than the" archsection.

v2. In'anunderground conduit for a condlucltor with'means ki for supporting the conductor, the combination Wit-h a y drainage *ribs lo Which bite into the 'tile "locatedv entirely belou7 the conductor supporting means, of an arch section adapted'to have lits( edges extend below the top edges of thejdrainage Atile and means for supporting the arch section vrelatively to the said drainage tile. y

` 3: In an underground conduitthe combination with a floory of a concrete drainage tile extending throughout the length of the conduit adapted to support a conductor,

Asuc'h'tile: resting upon the iloor, and an arch section forming with the" drainage tile a :conduit for the saidy conductor,y the said Aarchi section?- restmg upon and being supported bythe floor vvith the tile Within it 4. In lan undergroundconduit,the combinationvvith av door, of a concrete drainage base adapted to support a conductor, such .ibase resting `upon the door., and an arch sect-ion forming With the drainageV tile a i conduitforl the said conducton the'f'said yfor arch section resting .upon and being sup- 4ported= bythe Hoor, .and a concrete coverv u the complete conduit resting on they "lfloo Y {5. I`n fan underground conduit .the combinatin:vv-ith av Hoor, of a concrete vdrainage tile adapted to support a conductor,

such tile resting upon'the flooryand lan arch section forming with the drainage tile a conduit Ol the said. conductor, the said arch section resting upon and being supported by the door, and a concrete cover tile resting upon the floor, and an arch secf tion forming' vvith the drainagetilea conduit for the said conductor',l 'the said arch section resting upon andbeing supported'by the iioo'r2 and a concrete cover for thecomplete conduit resting on the floor, the'pcontacting faces of the cover and Hoor being tenoned. i

,7L In an underground conduit the cornbination with a drainage tile, of a metal'arch section adapted to havel its edges extend below the top edges of the drainage tile and meansfor supporting the, arch sectio'n'relatively to the said drainage tile. 8L' In an underground conduit the c onibin'ation with a drainage tile, of a corrugated 4 .v l i galvanized iron arch section adapted to have 'its edges'extend below the top edges ot the drainage tile and means for supporting the arch section relatively lto the said drainage tile. f

9. In an underground conduit the' com bination with a drainage tile, of a corrugated galvanized iron arch section adapted to have its edges extendbelovv the vtop edges of the drainage tile and means for support ing the arc'hfsection relatively to theV said drainage'tile, and a concrete cover for the conduit thus formed.

' 10. Inan underground conduit the com bin ation with a Hoor, of a concrete drainage ltile adapted to support a conductor, such tile resting upon the'loor. and a corrugated galvanized iron arch section forming' With" the drainage tile a conduitiior the4 said conductor. the said arch section resting .upon and being supportedibjT the yfloor and a concrete cover for the conduit thus tormed l1. In an underground conduit for a heat conductor, the combination with a Hoorfot relatively hard material, tvof a tile Ahavingy drainage" ducts extending longitudinally throughout, a corrugated metal arch section with substantial'flat sides yarched o vi the tile with the sides of the arch straddling the tile andresting upon and supported :by thiefloor and completely -housingthe'fslid ti e. f

12. A'conduit comprising .in combination, a Hoor, a tile resting on theyloor andiliaving longitudinal drainage ducts ektendingthere'- i nails/ear tion arched over the tile with the sides of the arch straddling the tile and completely housing the saine and having transverse surface drains adapted to break the HOW of Water along the top thereof and causing it to fall laterally to the floor.

13. In an underground conduit the combination with a floor, of a concrete drainage tile extending throughout the length of the conduit and adapted to support a conductor, such tile resting upon theiioor, and an arched section forming with the drainage tile a conduit for the said conductor, the said arched section resting upon and being f supported by the floor With the drainage tile Withln it.

1 4. In an underground conduit the co1n- :lili

section forming With the drainage tile a conduit Jfor the said conductor, the said arch section resting upon and being supported' by the floor, and means mounted upon the top of the tile Within the arch section for supporting a steam pipe or the like.

In testimony whereof I have signed my name to this specification in the presence of two Witnesses.

JOHN W. ORROCK. Witnesses:

GORDON G. COOKE, WILLIAM J. C. HEWETsoN. 

